Removing vent windows from 1969 by installing 1975 doors?

At a minimum, different upper doors. 73-up have the cheesy plastic trim.

Perhaps it might be easier to remove the vent wings and install the 73-up glass, regulator and window channels. I have no way of knowing whether that would actually work, just thinking out loud. Would be cool to see if you could make it work.

But I agree, why change the vent windows? They add character!